http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102643427-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4f2c62ec89c694f685b37d4b8df0b620 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G77-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29C33-64 |
| filingDate | 2012-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_948749b70ed9fa46f715a01f294fe5e7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_653859b59fff58c166006abea1c27545 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_faf7384f4b6df06b471daada6c7a56c5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a590d46029b482f6d2a5100d3d5a8646 |
| publicationDate | 2013-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102643427-B |
| titleOfInvention | Method for producing high-purity dimethyl silicon oil by using anhydrous strong alkali as catalyst |
| abstract | The invention relates to a method for producing high-purity dimethyl silicon oil by using anhydrous strong alkali as a catalyst. Low-mole-mass hexamethyl disiloxane is used as a terminating agent, and a methanol concentrated solution of anhydrous tetramethylammonium hydroxide is used as a catalyst to catalyze the ring opening of the low-mole-mass dimethyl cyclosiloxane, thereby obtaining the high-purity dimethyl silicon oil. The method comprises the following steps: (1) preparing the catalyst; (2) adding the low-mole-mass terminating agent into a three-neck flask, the low-mole-mass dimethyl cyclosiloxane and the catalyst, putting the three-neck flask into an oil bath with 60-80 DEG C while stirring at high speed, and keeping the temperature to carry out polymerization reaction for 4-24 hours; (3) heating the reactant temperature in the three-neck flask to 120-135 DEG C to decompose the catalyst, extracting low-boiling substances under the negative pressure of 0.04-0.09 MPa for 0.5-4 hours; and (4) cooling the reactant to obtain the colorless odorless transparent dimethyl silicon oil. The invention has the advantages of simple technique and easy process control; and the prepared dimethyl silicon oil has the advantage of high purity, and does not polymerize or lose effect at high temperature. |
| priorityDate | 2012-05-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.